diff --git a/og-image/api/_lib/parser.ts b/og-image/api/_lib/parser.ts
index dab8591d..a335fe48 100644
--- a/og-image/api/_lib/parser.ts
+++ b/og-image/api/_lib/parser.ts
@@ -71,8 +71,8 @@ export function parseRequest(req: IncomingMessage) {
     creatorName: getString(creatorName) || 'Manifold Markets',
     creatorUsername: getString(creatorUsername) || 'ManifoldMarkets',
     creatorAvatarUrl: getString(creatorAvatarUrl) || '',
-    challengeAmount: getString(challengeAmount),
-    challengeOutcome: getString(challengeOutcome),
+    challengeAmount: getString(challengeAmount) || '',
+    challengeOutcome: getString(challengeOutcome) || '',
   }
   parsedRequest.images = getDefaultImages(parsedRequest.images)
   return parsedRequest
diff --git a/og-image/api/_lib/template.ts b/og-image/api/_lib/template.ts
index 7285bc15..5f795c58 100644
--- a/og-image/api/_lib/template.ts
+++ b/og-image/api/_lib/template.ts
@@ -151,10 +151,10 @@ export function getHtml(parsedReq: ParsedRequest) {
         </div>
         <div class="flex flex-col text-primary">
           <div class="text-8xl">${
-            challengeAmount ? 'M$' + challengeAmount : probability
+            challengeAmount !== '' ? 'M$' + challengeAmount : probability
           }</div>
            <div class="text-5xl">${
-             challengeOutcome ? 'on' + challengeOutcome : ''
+             challengeOutcome !== '' ? 'on' + challengeOutcome : ''
            }</div>
           <div class="text-4xl">${probability !== '' ? 'chance' : ''}</div>
         </div>
diff --git a/og-image/api/_lib/types.ts b/og-image/api/_lib/types.ts
index 3b7f9a2d..eb8b412d 100644
--- a/og-image/api/_lib/types.ts
+++ b/og-image/api/_lib/types.ts
@@ -18,6 +18,6 @@ export interface ParsedRequest {
   creatorName: string
   creatorUsername: string
   creatorAvatarUrl: string
-  challengeAmount: string | undefined
-  challengeOutcome: string | undefined
+  challengeAmount: string
+  challengeOutcome: string
 }